Bearing wholsales in Bayswater are going to get 1 sent from Singapore, 58 85 8, the difference in width should only be to the caseing and not the rubber seal its self.
I had considered most of the options that everyone is putting up, if the metal outside seal does not turn up I will try taking the sharp edges off the circlip groove and then when I have installed the seal run a bead of blue oil resistant silicone.
Thanks for everyones input.
Cheers
Bruce